No fluid generated when baking data + baking mesh (2.90.1)
When there's no emission, look first at the emitter (Circle, Inflow). Your &quot;Circle&quot; object, although converted to a mesh, may have insuffient surface areas to emit anything.  I checked the Is-Planar in the screen-cap below, and all started to work, even after reducing the Domain's Resolution from 200 to 100 (faster simulation, less accuracy).


I had a similar &quot;dripping blood&quot; for an animation.  It took some patience to get the effector animated to occasionally drip and not occasionally pour.   You might want a few, smaller circles with animated &quot;Use Flow&quot;.  Or instead of a circle with &quot;Is planar&quot; (inaccurate), consider using a cylindar, and adjust the Z-dimenison (smaller == less flow).  Or continue to use your circle but scale X&amp;Y.